Play Roadhog. The only way his Tyre can kill you if you're at full health (which you will be if you're Roadhog because he can heal 300HP every 5 seconds or so) is if he drives it up your butt, because it does 600 damage, which is Roadhog's max HP. If you've got Torbjorn armour or Symmetra shield on then it can't kill you at all.

You can also soak a Hanzo ult long enough to escape from the middle of it if you heal half-way through.